I'll chime in. Just landed back from two weeks in Whistler (where it's snowing a lot now, of course). We had a wide mix of conditions; overcast/foggy layers with small overnight snow for the first five days, heavy rain on the first Thursday night and continuing into the Friday, a true pow day on the middle Sunday and a consolidation of that powder over the following week or so (cut-up pow turning to light crud and then skied-out, flattened heavier crud).
Before I went I had two skis prepped; Head Monster iM78 (183cm) and Head Mojo 94s (187cm). Based on the forecast immediately before leaving I opted for the Mojos. I skied 13 of 14 days on the Mojos, and spent a demo day (second Wednesday, I think) on the Magnum 8.5ti (181cm) [edit - demo was from Fanatykco]. With perfect hindsight it was a wash between the two Heads as to which was the better ski for me over the fortnight, but I do think the best option across the mix of conditions we faced was the 8.5ti.
If you're limited to one ski (e.g. travelling overseas), have to take whatever conditions you get (i.e. travelling overseas) and are looking to tackle off piste and bumps, the 8.5ti is a fabulous option. I'd like to compare it back-to-back with the 8.7 (never tried) and the MX88 (tried and loved a couple of times) before making a final decision, although I'm not likely to get the chance. I'm on board with all that has been said in this thread - I certainly missed the energy of a carver on piste - but the versatility in the bumps and crud certainly mitigated against that. It's just a matter of choosing where and what you'd like to compromise.
Note that I also spent a couple of hours zooming around the groomers on a demo pair of Head Rev 84 (184cm) and a Rossi Pursuit (177cm from memory) to get a general idea what my Monsters would have been like in the same conditions. I also noted a real lack of sub-90mm skis in the mountain demo hut/yurt - everything seemed slanted towards 90mm and up. The Solly Rockette 90s were a huge hit with the ladies, by the way.
I'm just pointing out there are times when a quiver isn't always available and the mid-80s ski represents the all-rounder of choice (presently a big hole in my quiver). In my opinion the Magnum 8.5ti is taking this category in an interesting direction. Great ski.
So, the Mojos will go up for sale in coming weeks, and I'm now looking for something in that space.
Edited by sinbad7 - 3/14/13 at 5:26pm